Well-curb



(NoMael.)

I M. WALKER.v

WELL CURB.

No. 310,341. Patented Jan. 6, 1885.

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[7m/enfer UNITED STATESl PATENT OFFICE.

MIOIAH VALKER, OF PORT HURON, MICHIGAN.

WELL-CU RB.

SPECIFICATION forming part of Letters Patent No. 310,341, dated January 6, 1885.

Application tiled June 1S, 1884. (No model.)

To all whom it may concern.'

Be it known that I, Mrcriirr WALKER, of Iort Huron, in the county of St. Clair and State of Michigan, haveinvented new and useful Improvements in Vell-Curbs; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, Which form a part of this specification.

Thisinvention relates to certain new and useful improvements in the construction of well-curbs, especially adapted to wells where a large supply of water is required-as for Waterworks-and which cannot be obtained in sufficient quantity from one stratum of water-bearing gravel, and it consists in the peculiar combinations and the construction and arrangement of parts, hereinafter more particularly described and claimed.

Figure lis a central vertical section of a well provided with my improved curb, and showing the method of obtaining water from two different strata and from the third at the bottom of the well. Fig. 2 is a cross-sec tion on the line X X in Fig. l. Fig. 3 is a perspective sectional detail.

In the accompanying drawings, which form a part of this specification, A represents aseries ot concentric rings made of plank or other form of timber, each ring in the series being larger than the one immediately below it. B represents one or more concentric rings, also made of timber, at the top; and to these rings, at top and bottom, the outside planking, O, is vertically nailed, care being taken to leave a slight space between the edges of the planks. If the curb is a long one,it may be found necessary to employ other similar concentric rings at intermediate points between the ends, to prevent the curb from being crushed in by the pressure of the earth filling. This curb is sunk in the usual way by digging the earth from the bottom and sinking the curb. As the curb gradually sinks,tlre brick liningD is built upon the foundation formed ,by the series of concentric rings at the bottom, as shown. The upper ledge forms the direct support for the brick lining, and this is preferably not less than twelve inches wide, allowing the bricks to be laid in courses with broken joints. The bricks being` rectangular in form, while the curb lis round in cross-section, the inner ends of the bricks are laid as closely together as possible, leaving a wedgeshaped space between them. The brick lining is built up as the curb gradually sinks, and after it is sunk to the depth required a brick or other curb, E, may be built upon the upper concentric rings. There should be no cement of any kind employed between the courses in laying up the brick lining. and the wedge-shaped spaces between the bricks are to be iilled with iine gravel, through which the water from the various strata F and G will pass and enter the curb in avery pure condition. It will be seen that if more water is wanted the curb must be increased in length to enable it to be sunk through or into a lower strat-um, and this may be continued indenitely until a sufficient amount of water is obtained for the purposes required.

That I cla-ini as my invention isl. The combination of the lower concentric rings, A, and the upper rings, B, and the planking O, secured to said rings, the ringsA forming a support for the brick lining, substantially as described.

2. A wooden curb lined with brick, such brick resting upon one of the concentric rings to which the planking is secured, with a iilling of tine gravel filling the interstices between the bricks which form the lining, substantially as and for the purposes specified.

3. A well-curb composed of the planking O, secured at top and bottom to concentric rings, and provided with a brick lining, a space being left between the adjacent edges of said planks, whereby the Water will enter from the various water-bearing strata through which said curb passes, substantially as described.

MICIAH VALKER.

Vitnesses H. S. SPRAGUE, E. SOULLY. 

